Key Area 2a: Control and Communication: Nervous Control Flashcards
Stimulus
a sensory input that is detected by receptors in multicellular organisms
Response
a reflex action, which is an automatic and rapid response to a stimulus
Neuron
nerve cells that transmit electrical impulses
Sensory (neuron)
a nerve cell that detects changes in the environment and sends signals to the central nervous system (CNS) to process
Inter neuron
a neuron that connects to brain regions, allowing communication between sensory or motor neurons and the central nervous system (CNS)
Motor neuron
enable a response to occur, which can be rapid action from a muscle or a slower response from a gland.
Central nervous system
the part of the nervous system that is made up of the brain and spinal cord
Cerebrum
conscious response and higher brain function
Cerebellum
centre of balance and movement coordination
Medulla
sub-conscious control - breathing, heart rate
Effectors
a muscle or gland that responds to a stimulus by producing a specific action
Receptors
specialized cells that detect changes in the environment, or stimuli, and respond by generating electrical impulses
Brain
an organ in the head that controls many body functions in multicellular organism
Spinal cord
lets the brain send messages to the body
Synapse
small gap between neurons